Andrea Joy Hall was 18 when she was last seen hitchhiking on July 8, 1979, along the Pacific Coast Highway in Redondo Beach, California. According to confessions from Lawrence Bittaker and Roy Norris, the pair picked her up, lured her into their van, abducted and murdered her. The confessions describe Hall being assaulted and taken into a remote area of the San Gabriel Mountains, where Bittaker allegedly tortured her with an ice pick, strangled her and disposed of her body off a cliff.

Despite those confessions and the killers being convicted for multiple murders that summer, Hall’s body has never been recovered and her remains are presumed lost in the mountainous terrain.

Does anyone have information about Andrea’s movements on July 8, 1979, or recall seeing her that day?